When the RPC_DEFAULT_ENTRY_SYNTAX environment variable is
defined, its value determines the default syntax. When it is not
defined, the RPC run-time system uses the rpc_c_ns_syntax_dce name
syntax as the default. The syntaxes that correspond to these values
will be specified in the DCE: Directory Services specification.

Please note that the html version of this specification
may contain formatting aberrations. The definitive version
is available as an electronic publication on CD-ROM
from The Open Group.